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    <title>5.7.流程控制-循环结构-for循环-重复执行相同代码</title>
    <script>
        //for 循环可以执行相同的代码
        for (var i = 1; i <= 10; i++) {
            console.log('重复执行相同的代码10句');
        }
        //可以让用户控制输出的次数
        var num = prompt('请输入次数');
        for (var i = 1; i <= num; i++) {
            console.log('用户控制输出的次数');
        }
    </script>
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